When you look for supporting evidence in published materials, you are evaluating the

Credibility of the sources.

When identifying sources that provide relevant, valid written material, researchers evaluate a variety of factors, credibility believability of the source. The writer provides a feasible supporting evidence to back up an opinion, outcome, or claim, the researcher may determine that the source is credible. Other considerations are the timeliness of the data or article, the relevance of the information to the topic at hand, and the expertise of the writer or publisher. We ability of the text involves the readers ability to understand the content. If the researchers evaluating the research study he or she might analyze the margin of error of certain types of data as one factor in determining the sources credibility.